REFACTOR(repo): simplify project structure

- Move services/backend to langgraph/
- Move deploy/docker/Dockerfile to Dockerfile
- Remove deploy/, services/ folders
- Update GitHub Actions workflow paths
- Remove kustomization update logic (managed by K3S-HOME/applications)

langgraph/workflow.py

@@ -0,0 +1,100 @@
+"""
+LangGraph K8s Infrastructure Planning Workflow
+워크플로우: Planning → Research → Decision → Prompt Generation → End
+"""
+from typing import Literal
+from langgraph.graph import StateGraph, END
+from agents import (
+    AgentState,
+    orchestrator_node,
+    planning_node,
+    research_node,
+    decision_node,
+    prompt_generator_node
+)
+
+
+def router(state: AgentState) -> Literal[
+    "planning",
+    "research",
+    "decision",
+    "prompt_generator",
+    "end"
+]:
+    """
+    다음 에이전트 라우팅 로직
+    정보 조회: research → end
+    도입 결정: planning → research → decision → prompt_generator (추천시) → end
+    """
+    current = state.get("current_agent", "orchestrator")
+
+    # 명시적으로 지정된 다음 에이전트로 이동
+    if current in ["planning", "research", "decision", "prompt_generator"]:
+        return current
+
+    # end 상태
+    if current == "end":
+        return "end"
+
+    # 기본값: orchestrator가 결정
+    return "planning"
+
+
+def create_mas_workflow():
+    """
+    K8s Infrastructure Analysis & Decision Workflow 생성
+
+    워크플로우 1 (정보 조회):
+    User Request (e.g., "PostgreSQL 비밀번호 알려줘")
+        ↓
+    Orchestrator → Research → Orchestrator → End
+
+    워크플로우 2 (도입 결정):
+    User Request (e.g., "Tekton 도입할까?")
+        ↓
+    Orchestrator → Planning → Orchestrator
+        ↓
+    Research (K8s cluster analysis) → Orchestrator
+        ↓
+    Decision (추천/비추천) → Orchestrator
+        ↓
+    Prompt Generator (추천시만, 구현 가이드) → Orchestrator
+        ↓
+    End
+    """
+    workflow = StateGraph(AgentState)
+
+    # 노드 추가
+    workflow.add_node("orchestrator", orchestrator_node)
+    workflow.add_node("planning", planning_node)
+    workflow.add_node("research", research_node)
+    workflow.add_node("decision", decision_node)
+    workflow.add_node("prompt_generator", prompt_generator_node)
+
+    # 시작점: Orchestrator
+    workflow.set_entry_point("orchestrator")
+
+    # Orchestrator의 조건부 라우팅
+    workflow.add_conditional_edges(
+        "orchestrator",
+        router,
+        {
+            "planning": "planning",
+            "research": "research",
+            "decision": "decision",
+            "prompt_generator": "prompt_generator",
+            "end": END
+        }
+    )
+
+    # 각 에이전트는 작업 후 Orchestrator로 복귀
+    workflow.add_edge("planning", "orchestrator")
+    workflow.add_edge("research", "orchestrator")
+    workflow.add_edge("decision", "orchestrator")
+    workflow.add_edge("prompt_generator", "orchestrator")
+
+    return workflow.compile()
+
+
+# 그래프 인스턴스 생성
+mas_graph = create_mas_workflow()